81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
/*
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Copyright 2017 Vector Creations Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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window.riotIOS = {};
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// Generic JS -> ObjC bridge
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window.riotIOS.sendObjectMessageToObjC = function(parameters) {
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var iframe = document.createElement('iframe');
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iframe.setAttribute('src', 'js:' + JSON.stringify(parameters));
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document.documentElement.appendChild(iframe);
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iframe.parentNode.removeChild(iframe);
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iframe = null;
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};
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window.riotIOS.events = {};
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// Listen to messages posted by the widget
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window.riotIOS.onMessage = function(event) {
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// Use an internal "_id" field for matching onMessage events and requests
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// _id was originally used by the Modular API. Keep it
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if (!event.data._id) {
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// The Matrix Widget API v2 spec says:
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// "The requestId field should be unique and included in all requests"
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event.data._id = event.data.requestId;
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}
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// Make sure to have one id
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if (!event.data._id) {
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event.data._id = Date.now() + "-" + Math.random().toString(36);
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}
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// Do not SPAM ObjC with event already managed
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if (riotIOS.events[event.data._id]) {
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return;
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}
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if (!event.origin) { // stupid chrome
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event.origin = event.originalEvent.origin;
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}
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// Keep this event for future usage
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riotIOS.events[event.data._id] = event;
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riotIOS.sendObjectMessageToObjC({
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'event.data': event.data,
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});
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};
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window.addEventListener('message', riotIOS.onMessage, false);
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// ObjC -> Widget JS bridge
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window.riotIOS.sendResponse = function(eventId, res) {
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// Retrieve the correspong JS event
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var event = riotIOS.events[eventId];
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console.log("sendResponse to " + event.data.action + " for "+ eventId + ": " + JSON.stringify(res));
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var data = JSON.parse(JSON.stringify(event.data));
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data.response = res;
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event.source.postMessage(data, event.origin);
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// Mark this event as handled
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riotIOS.events[eventId] = true;
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}
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